Blue steel #2

Aogami No. 2 (from Hitachi Metals Ltd.) is created by adding Chromium and Tungsten to Shirogami No. 2. This combination makes the steel tougher and helps create hard carbide molecules, which improve how long the edge stays sharp. Many users have found that while Aogami No. 2 is very similar to Shirogami No. 2 in sharpness, it lasts a little longer before needing to be sharpened.